@import url('https://fonts.googleapis.com/css?family=DM+Sans:500,700&display=swap');

* {
    box-sizing: border-box;
}

body {
    text-align: center;
    display: flex;
    height: 100vh;
    width: 100%;
    justify-content: center;
    align-items: center;
    padding: 0 20px;
    background-image: url("https://www.toptal.com/designers/subtlepatterns/patterns/debut_light.png");
}

.nav {
    display: inline-flex;
    position: relative;
    overflow: hidden;
    max-width: 100%;
    background-color: #fff;
    padding: 0 20px;
    border-radius: 40px;
    box-shadow: 0 10px 40px rgba(159, 162, 177, .8);
}

.nav-item {
    color: #83818c;
    padding: 20px;
    text-decoration: none;
    transition: .3s;
    margin: 0 6px;
    z-index: 1;
    font-family: 'DM Sans', sans-serif;
    font-weight: 500;
    position: relative;

    &:before {
        content: "";
        position: absolute;
        bottom: -6px;
        left: 0;
        width: 100%;
        height: 5px;
        background-color: #dfe2ea;
        border-radius: 8px 8px 0 0;
        opacity: 0;
        transition: .3s;
    }
}

.nav-item:not(.is-active):hover:before {
    opacity: 1;
    bottom: 0;
}


.nav-item:not(.is-active):hover { color: #333; }

.nav-indicator {
    position: absolute;
    left: 0;
    bottom: 0;
    height: 4px;
    transition: .4s;
    height: 5px;
    z-index: 1;
    border-radius: 8px 8px 0 0;
}

@media (max-width: 580px) {
    .nav { overflow: auto; }
}
